Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863272 | Multi-mode fiber optic resonator gyroscope | — | 1989-09-05 |
| 4840489 | Interferometer gyroscope having two feedback loops | — | 1989-06-20 |
| 4796968 | Single-mode optical-fiber directional coupler | John R. Stemniski, Donato Cardarelli | 1989-01-10 |